* Build fix with MinGW GCC 9.2.0
* Fix MinGW tripplets
Fixes#12065
* clang-format
* Fix unused read_symlink_implementation warning marked as error
read_symlink_implementation was used only in copy_symlink_implementation
when #if defined(_WIN32) && !VCPKG_USE_STD_FILESYSTEM was true.
Removed the warning otherwise.
Co-authored-by: JackBoosY <yuzaiyang@beyondsoft.com>